Agitator or mixing apparatus.



No. 865,128. n PATBNTED SEPT. 3V, 1907. R. SMITH.

v AGITATOR 0R MIXING APPARATUS.

APPLIUATION FILED APB.. `1. 1907.

2 SHEETS-SHEET 1.

`N0.65,12a. PATBNTED SEPT. 3,1190?.

R. SMITH l AGITATOR 0R MIXING APPARATUS.

LPPLIUATION FILED APB. 1. 1907.

2 SHEETS-SHEET 2.

www 4 7a y secured to the upright shaft, separate from the other vas will be hereinafter Yfully described.

salue figure.

UNITED .STATES "PATENT OFFICE.

RICHARD SMITH, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO SMITH PAPER MACHINERY COMP-ANY, OF PORTLAND, MAINE, A CORPORATION OF MAINE.

AGITATOB OR MIXING APARATUS.

Specification of Letters Patent.

Patented Sept. 3, 190'?.

Application ses ps1 1,1907. serial No. 365,645.

To all whom. it may constan:

Patent, No. 473,530, and N o. 492,475, in which there isa central feed, combined with a circumferential vdischarge` l' or mixing semiliquid materials, such as paints, pulp, etc. 4

The object of my invention is to improve upon the construction of the agitator or revoluble plate, shown and described in said patents, and also to provide an auxiliary propeller, located at a suitabledistanceabove the agitator, within thecirciilar stuff chest, and fast on the same vertical rotary shaft as the agitator to .rotate in the saine direction as the agitator.

My invention consist-s in certain novel features of construction of my improvements as will be hereinafter fully described. i Y

Heretoiore it has been customary to make the agitator in one piece or casting, and it is so shown in my patents above referred to I have found in practice that in some cases agitators are required which have to he ten or more feet in diameter, and if the same are made in one piece, or as a single casting, they are very heavy, and cumbersome to handle, and put into position in the stuff chest, and also require greater power to operate thel same. In my improved construction of an agitator, I make the same in separate sections, which are secured together, and I also make the hub,

parts, and secure the other parts thereto. In connection with the agitator I also preferably use an auxiliary propeller. which is so made that it will draw the pulp, or other material, d'own and in toward thecenter of the stuff chest, to direct it to the agitator, all

Referring to the drawings z-Figure l is a central vertical section through the stuff chest, the'auxiliary propeller, and the agitator. Fig. 2 is a horizontal section through the stuff chest, taken at a point indicated by line 2, 2, Fig. l, looking in the direction of arrow a, i Fig.v 3 is a plan view of the auxiliar-y propeller, detached. Fig. 4 is a section, on line 4, 4, Fig. 3, lookingin the direction of arrow b, same ligure. Fig. 5 is, on an enlarged scale, a plan View ofthe agitator, detached. Fig. 6 is an'edge view of ythe parts shown in Fig. 5, looking in the direction of arrow c,

agitator.

of the agitator shown at the left in Fig. 5, detached. and looking inthe direction of arrow d, same figure. Fig. 8 is a plan and edge view of the central hub of the agitator; detached. v Fig. 9 is a plan and edge view of the inner end of an attaching arm of -a section of the In the accompanying drawings, l is a portion of a circular stuff chest, of any ordinary construction, in which is contained the material to be mixed. Within the stuff chest l is loca-ted a vertically extending rotary shaft 4, which is suitably mounted at its lower end in '65 a step 5, and has secured on\its upper end, in this instance a belt pulley 6. f

I will now describe my improyed agitator.

. The agitator 7 is, in this instance made in three separate sections in curved shape, the contiguous ends of which are adapted to overlap, and be bolted, or other,- wise detachably secured together to form a ring, or round disk opened through the center. Each section 7 haspreferably one arm 7. extending inwardly therefrom, and preferably cast integral with the section. The outer end of said ami preferably extends to the outer edge of the disk, asishown by broken lines 'in Fig. 5, to form a downwardly extending vertical blade or flange 7 on the underside of the disk, tangentially disposed. Each section preferably has upon its underside a second downwardly extending vertical blade 7, tangentially disposed, and upon its upper side two ribs 7b, tangentially disposed. The blades 7 and 7, and ribs 7b, are used for the same purpose as the blades and ribs shown and described in my said Patent, 86l No. 492,475. Each arm 7 on the sections 7, has a vertically extending ear ,or lug 7 on its inner attaching end, and between said ears or lugs 7 a hub or collar 8 extends, and is secured to said lugs 7, in this instance by bolts 9. The hub 8 is secured to the shaft 90 44 by bolts or otherwise. i

In connection with the agitator 7, I preferably use an auxiliary propeller 10, which is preferably made as shown in the drawings, having a central hub 10,

adapted to fit on and be secured to the shaft 4, at a l lsuitable distance above the agitator 7. The hub 10 has preferably three arms 10 extending out therefrom, and preferably integral therewith, which are of -forated central portion of the agitator, between the arm 7, and be agitated and mixed by the blades and v underside thereof, and a fin or fins on the upper side outeredges thereof to the upper part'of the stuff chest,

' thc under side thereof, and a tin or fins on the upper side ribs on the agitator, and then pass out from under the as shown by arrows in Fig. 1.

It wi1i`be understood that the details of construction of my improvements may be varied if desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:-

1. In a mixing apparatus, the combination with a rotary shaft, and a hub made separate therefrom and secured thereon, of an agitator made in sections, each section of curved shape and provided with a plate or plates on thereof, and the contiguous ends of the sections secured together, to form a ring or disk having its central part open for the passage of the material to be mixed, and each section having an attaching arm thereon-extending inwardly therefrom, and having a vertically extending lug on its attaching end, adapted to be secured to said hub.

2, In a mixing apparatus, the combination witha roses,

of curvedshapeand provided with a plate or plates on the thereof, and the contiguous ends of the sections secured together, to form a ring or disk, having its central part open for the passage of the material to be mixed, and each section having an attaching arm integral therewith-extending inwardly therefrom, and at its outer end extend- -ing to the outer edge ot the section, and at its inner end vvhaving a vertically extending lug thereon adapted to be rearwardly secured to said hub. t

l 3. In a mixing apparatus, the combinationwith a rotary shaft, and an agitator made in sections, each section of curved shape, and provided Awith a plate or plates on the underside thereof, and a iin or dns on the upper side thereof, and an attaching arln extending inwardly therefrom, and the contiguous ends of the sections secured together, to form a ring or disk having its central part open l fol-'the passage of the material to be mixed, o! an auxiliary propeller-*located above the agitator, and securedon said shaft to revolve in the same direction as the agitator.

RICHARD SMITH.

Witnesses:

JOHN C. Dawar, M. Haas. 

